Notes on my Packard Bell Multimedia C111 soundcard under Linux 2.1.79
---------------------------------------------------------------------

Packard Bell bundles a wierd soundard/modem in the C111 model (among
others), which will work under Linux, with some scraping and filing.
It's an Aztech card with WSS audio and the usual 8-bit soundblaster
modes.  The linux driver doesn't recognize it as an Aztech, and so it
won't put it into WSS mode unless you hack the driver.

In order to upgrade to 2.1.79, I applied pre-patch-2.1.80-4.

In recent kernels, the sound driver is broken out into a bunch of
modules.  I don't use MIDI or the synthesizer functions, so I don't
know if they are working or not, but the audio stuff looks like it's
working.

I used my old hack/patch for sb_common.c, which forces it to go into
WSS mode.  Don't use this patch unless you think your card is an
AZTECH.  My card has a chip on it marked AD1845JP and another marked
"AZTECH AZT2316R".

--- linux/drivers/sound/sb_common.c.orig        Sat Nov 29 12:33:21 1997
+++ linux/drivers/sound/sb_common.c     Sat Jan 17 11:04:34 1998
@@ -696,10 +696,12 @@
        if (devc->major == 0)
                dsp_get_vers(devc);
 
+       devc->type = MDL_AZTECH;   /* risacher hack */
        if (devc->major == 3 && devc->minor == 1)
          {
                  if (devc->type == MDL_AZTECH)         /* SG Washington? */
                    {
+                           devc->type = 0;   /* risacher hack */
                            if (sb_dsp_command(devc, 0x09))
                                    if (sb_dsp_command(devc, 0x00))     /* Enter WSS mode */
                                      {

I then loaded with:

insmod sound
insmod uart401 io=0x330 irq=9
insmod sb io=0x220 irq=5 dma=1
insmod ad1848 io=0x530 irq=10 dma=0

(or something -- I'm reconstructing my notes from last night)

At some point, I had to compile uart401 by hand.  I'm not sure if this
was fixed by pre-patch-2.1.80-4 or not.

Then I had to make /dev/audio and /dev/dsp point to /dev/audio1 and
/dev/dsp1.  They had previously been the same as /dev/dsp0 and
/dev/audio0.  Also for /dev/mixer{,0,1}.  /dev/{audio,dsp,mixer}0, is
apparently the soundblaster mode that is inactive.


cat /dev/sndstat yields:
-----------------------

OSS/Free:3.8s2++-971130
Load type: Driver loaded as a module
Kernel: Linux risacher 2.1.79 #2 Fri Jan 16 23:37:36 CST 1998 i586
Config options: 0

Installed drivers: 

Card config: 

Audio devices:
0: Sound Blaster (8 BIT/MONO ONLY) (3.1)
1: MSS audio codec (AD1845)

Synth devices:

Midi devices:
0: MPU-401 (UART) MIDI
1: Sound Blaster

Timers:
0: System clock
1: MSS audio codec (AD1845)

Mixers:
0: Sound Blaster
1: MSS audio codec (AD1845)

/proc/ioports
-------------
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0220-022f : soundblaster
02f8-02ff : serial(auto)
0376-0376 : ide1
03c0-03df : vga+
03e8-03ef : serial(set)
03f6-03f6 : ide0
03f8-03ff : serial(auto)
0530-0533 : WSS config
0534-0537 : MSS audio codec
ffa0-ffa7 : ide0
ffa8-ffaf : ide1

/proc/interrupts 
  0:    9376482   timer
  1:      20192   keyboard
  2:          0   cascade
  4:    1030064   serial
  5:          0   soundblaster
 10:          9   MSS audio codec
 12:      18202   PS/2 Mouse
 13:          4   fpu
 14:      37426   ide0
 15:    2951449   ide1
NMI:          0

/proc/dma 
 0: MSS audio codec
 1: SoundBlaster8
 4: cascade


Daniel Risacher
magnus@alum.mit.edu
17 Jan 1998